 Today's Cobb Highlight shows off our Subaru NextGen FlexFuel package for the 2015-21 Subaru STI. Tuning your car with ethanol essentially gives you race fuel results with pump gas convenience if you have a flex fuel setup on your car. The Cobb NextGen Subaru FlexFuel package consists of a combination of two Cobb fuel related kits, the Subaru NextGen FlexFuel ethanol sensor kit and the Subaru fuel pressure sensor kit. The ethanol sensor kit is a plug and play solution that is made up of an ethanol content sensor with a custom mounting bracket, Cobb fuel lines, and our bespoke NextGen FlexFuel module with accompanying harness, plus a billet adapter is included for seamless integration with the Cobb fuel rail line kit. The one-of-a-kind Cobb NextGen FlexFuel module processes the data from the ethanol sensor and communicates with the car's ECU which is calibrated by the Cobb access port with a flex fuel specific tune. You can think of the NextGen FlexFuel kit as the brains of the operation. That's what measures and feeds info to the ECU so the engine can run safely and efficiently all on one tune for any percentage of ethanol in the tank. The Cobb Subaru Fuel Pressure Sensor Kit is an additional and absolutely necessary source of information to ensure all of the above occurs safely and consistently. The 0-100 psi sensor has OEM level quality and performance. That billet aluminum adapter installs inline with our fuel rail line kit to allow for a true plug-and-play installation. Once installed, users can easily monitor fuel pressure on the access port. All of these items and features combined make up the Cobb NextGen Subaru FlexFuel package for the 2015-21 Subaru STI. And the cherry on top is that this package is a direct plug-and-play upgrade for those who already have our NextGen Stage 2 power package. There's no greater flex in the turbo tuning world than an easy-to-use FlexFuel package to flaunt every ounce of muscle that your EJ-powered STI can put out. Check out CobbTuning.com to get your fix for a Cobb FlexFuel package today.